Bargman



Jan. 24, 1956 T. BARGMAN 2,731,822

' ROTARY-BOLT LOCK IN VEN TOR.

THEDOR' AP6/HHN Jan. 24, 1956 V1'. BARGMAN 2,731,822

ROTARY-BOLT LOCK 'lill/112711111114 IN VEN TOR.

77660009! GMA/V BY ROTARY-B913` LCK Theodore Bargman, Detroit, Mich.

Application SeptemherlS, 19152, Serial No. 309,715

6 Claims. (Cl. 70-135) This invention relates to rotary-bolt door-locksand in particular to such a lock embodying improvements in latching andlocking mechanism, activating mechanism, and adjustment characteristics;this application constitutes a continuation-impart of my pendingapplication erial No. 273,087, tiled February 23, 1952.

it is a primary object of tne invention to provide a simple actuatingmechanism for rotary-bolt locks.

An object of the invention is to provide a novel outside handle and pulllever arrangement.

An object of the invention is to provide a housing concealing the pulllever and protecting same from the elements such as rain, snow, and ice.

An object of the invention is to provide improved keeper-to-boltadjustment means which are easily located and adjustable as to heightand depth.

An object of the invention is to provide a cammingend on the end of thepull lever to activate the lock mechanism,

An object of the invention is to provide a rotary-bolt lock which iseasily mounted on a door and jamb as conventional locks or which iseasily integrated with a door and jamb such as in automobiles.

An object of the invention is to provide simplied latching and lockingmeans.

An object of the invention is to provide a lock mechanism whichautomatically unlocks upon closing and latching a door.

An object of the invention is to provide a lock mechanism whichfacilitates unidirectional motion of the inside handle to both unlocl;and unlatch the mechanism.

An object of the invention is to provide a more efficient, lessexpensive, improved, simplified lock having fewer parts and which ismore positive in action and more durable in use.

These and other objects of the invention will become apparent byreference to the following description of a rotary-bolt lock embodyingthe invention taken in connection with the accompanying drawings inwhich:

Fig. 1 is a cross-sectional View of Fig. 2 taken on the line lthereofshowing the inventive lock installed on a door and jamb.

Fig. 2 is a cross-sectional view of Fig. l taken on the line 2--2thereof.

Fig. 3 is an exploded perspective view of the parts constituting thejamb assembly.

Fig. 4 is a cross-sectional View of Fig. 1 taken on the line 4 4thereof.

Fig. 5 is a cross-sectional view of Fig. 1 taken on the line 5 5thereof.

Fig. 6 is a cross-sectional view of Fig. 2 taken on the line 6-6 thereofshowing the mechanism in locked and latched condition.

Fig. 7 is a view similar to Fig. 6 showing the lock in latchedcondition.

Fig. 8 is a View similar to Figs. 6 and 7 showing the mechanism inunlatched and unlocked condition.

tent

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Fig. 9 is a cross-sectional view of Fig. 6 taken on the line 9 9thereof.

Fig. 10 is a cross-sectional view of Fig. 6 taken on the line 10-10thereof.

Fig. 11 is a View looking in the opposite direction of Figs. 6 to 8taken on the line 'l1-*11 of Fig. 2; and

Fig. 12 is a perspective view of a modified keeper'particularly suitablefor installation on wood jambs.

Referring now to the drawings wherein like numerals refer to like andcorresponding parts throughout the several views, the rotary-bolt lockand associated parts disclosed therein to illustrate the inventioncomprise a door 20 and a jamb `21, a mechanism assembly 22 mounted onthe door 20 and ajamb cooperating assembly' Z3 mounted on the jamb 2l.

The jamb assembly 23 comprises a base-plate 24 or 24A screwed or boltedto the jamb by the bolts 25; the base-plate 24 and 24A has a relievedcenter portion 26 in the area surrounding and between the relativelylarge bolt receiving apertures 27 and 25 through which apertures thebolts 29 and Sli are disposed in threaded engagement with the compoundstrap nut 3l which lies in the relieved portion 26 of the base-plate 2dand it is obvious that the bolts 29 and 30 and compound nut 3l are freeto move relative -to the base-plates Z-'l and 24A within the limits ofthe relatively large apertures 27 and 28. The keeper-guide supportingface-plate 32 is fastened against the base-plate 24by meansof the bolts29 and 34% threaded in the compound strap nut 3l. and it is to be notedthat the portions of the face-plates 32 and 24 have mating verticalserrations 35 and 33A to facilitate depth adjustment of the face-plate32 and also vmating horizontal serrations 34 and 34A for regulatingheight adjustment. It can now be seen that by loosening the screw 29 inthe nut 31, the plate 32 may be universally adjusted for depth at acontrolled height and that by loosening the screw 3 in the nut 3l theface-plate 32 may be universally adjusted for height at a controlleddepth. It is to be also noted that the compound nut fil is capable ofblind tightening and loosening in that the opposite bolt 2% or 3d actsas a stop or wrench in conjunction with the tightening or loosening ofthe other bolt 29 or Sti.

Fig. l2 shows the base-plate 24A equipped with a back wall Sti, endwalls 3l and 32, and mounting tabs S3 and ifi for use in creating a bolt4l receiving cavity on a jamb when a bolt 4l is mounted in projectingrelationship on a door.

The jamb face-plate 32 carries the upper and lower guides 35 and 36which cooperate with the door plate 359 guides 37 and 3S to align thedoor mechanism with the jamb mechanism. The jamb face-plate 32 alsocarries keeper fiti which cooperates with the door rotary-bolt di whichis fixed on the shaft 412 journaled in the door faceplate 39 to lock orlatch the door. Thel shaft E-Z is connected to the latching and lockingrotor i3 for angular movement therewith via the sleeve te and shaft d5on which the rotor i3 is i'ixed and which shaft i5 is journaled in thecase d6. lt can now be seen that if the rotor 43 is held againstrotation, the bolt il and keeper li@ prevent the door opening relativeto the jarno, and that, if the rotor 43 is free to rotate, the door canopen and close relative to the jamb with the rotor Lil walking over thelobes e7 and i3 of the 1iieeper as the teeth t9 of the rotor 43 meshwith the lobes Pl-'7 and 43 of the keeper 4t) analogously to a rack andpinion, Figs. l 2, and 4.

Referring to the latching mechanism for selectively permitting andprohibiting rotor 43 rotation, the arm Sti is spring-pressed via thetorsion spring Si so that the latch dog 52 on the arm S0 is urged intoengagement with the projections 43A on the rotor 43 so` as to preventrotor rotation in a door opening direction and to permit rotor 43rotation by-passing in a door closing direction. Integral With the arm50 is the ilat cam 53 which coacts with the flat cam 54 on the handlever 54a which is pivotally mounted at 56 on the escutcheon plate 57and it is to be noted that the lever 55 is resiliently spring-pressedout of cam-engaging relationship by the spring 53. The shroud or housing66 surrounds the top and sides of the lever 55 and has an opening 6l inthe bottom thereof for inserting the operators fingers to pull thehandle portion 62 of the lever to move the cam portion 54 against thecam portion 53 to pivot the arm 5@ to move the dog latch 52 out ofengagement with the projections 43A to permit rotation of the rotor 43to unlatch the rotor 43 from the outside. The inside unlatchingmechanism includes the cam carrier 65 fixed on the shaft 66 which isjournal/ed in the back plate 67 and operated by the inside handle 68 topivot the carrier 65 to move the cam portion 69 downwardly against thelatching lever to drop the latch dog 52 out of engagement with the rotor43 to unlatch the rotor d3.

Relative to the locking mechanism the cam carrier 65 is equipped with atongue 7) which operates in conjunction with the leaf spring detent 71to tix the carrier 65 in an optional relative rotational position orangular rotational position as seen in Figs. 6 and 7 both of which areshort of unlatching the door in contra-distinction to Fig. 8 which showsthe cam portion 69 moved past the positions of Figs. 6 and 7 depressingthe lever 5b to unlatch the rotor 43. When the tongue 70 is at the rightor on the outside of the spring 71 point of bearing, Fig. 6, the angularposition of the carrier 65 is such that the locking dog 72 thereon islocated in locking engagement with the projections 43A of the rotor d3,and, when the spring 7l point of bearing is on the opposite side of thetongue 70, Fig. 7, the locking dog 72 is located out of contact with theprojections of the rotor 43. it can now be seen that the carrier 65 isoperable to lock the rotor 43 by movement of the inside handle in adirection opposite to unlatching the mechanisrn, and, that the insidelever 68 via the cam portion 69 on the carrier 65 is capable ofunlocking the mechanism by counter-clockwise movement as` seen in thedrawings from a position illustrated in Fig. 6 to the position seen inFig. 7 and that further movement of the inside handle 66 in acounter-clockwise direction moves the cam portion 69 against thelatching lever 50 to unlatch the rotor 43.

To lock and unlock the mechanism from the outside of the door a keycylinder 75 is pivotally disposed in the outside handle 623 and has aneccentric tip 76 cooperating with the projecting bifurcated ends 77A and77B located on the carrier 65 to move the carrier 65 between theposition seen in Figs. 6 and 7 to lock and unlock the locking dog 72relative to the rotor 43. It is to be particularly noted that theeccentrically disposed tip 76 is normally in a neutral position out ofengagement with the bifurcated ends 77A and 77B and only contacts thebiiurcated ends 77 when selectively by-directionally moving the carrier65 between the positions seen in Figs. 6 and 7 so that the inside handlecan operate the mechanism without interference from the outside means ofactivating the locking mechanism.

The key cylinder 75 is preferably so set that the key, not shown, isinsertable and eXtractable only when the tip '76 is in the neutralposition as seen in Fig. 8 and the key cylinder is also so set that itis fixed in this neutral position when the key is not in the cylinder75. Also, the key cylinder is preferably set to move 90 degrees ineither direction from the neutral position seen in Fig. 8 to thepositions seen in Fig. 6 and 7 to lock and unlock the rotor 43respectively by moving in one direction and contacting the bifurcatedend 77A on the carrier 65, Fig. 6, to pivot the carrier 65 to move thelocking dog 72 on the carrier 65 into Contact with the rotor 43 and bymoving in the other direction and contacting the bifurcated end 77B topivot the carrier 65, Fig. 7, to move the locking dog 72 on the carrier65 out of Contact with the rotor 43; the spring detent 7l holds thecarrier 65 in the key-set position via the tongue 70. After the user onthe outside so sets the carrier 65 in either position illustrated byFigs. 6 and 7, he turns the key to the position of Fig. 8 and extractsthe key leaving the tip 76 in a neutral position relative to thebifurcated ends 77A and 77B so that a user on the inside can operate themechanism via the inside handle 68 to lock, latch, unlock, and unlatchthe mechanism as desired.

The lock permits closing the door in all conditions as the rotor 43 canpass the latching dog and locking dog in rotational direction involvedin a door-closing direction and it is to be further noted that the doorcannot be closed in a locked condition as the rotor rotation in closingthe door unlocks the device as the rotor 43 projections 43A cam thelocking dog 72 to the position of Fig. 7.

Although the invention has been shown and described in detail, it isobvious that many changes may be made in the size, shape, detail andarrangements of the elements of the invention Within the scope of theappended claims.

I claim:

l. A rotary-bolt lock comprising a rotary-bolt, a rotor connected tosaid bolt for rotation therewith, projections on said rotor, aspring-pressed latch lever constantly urged toward locking engagementwith said rotor, a latch dog on said lever normally engaging saidprojections to prevent door opening direction rotation of said rotor tolatch a door and to permit door closing rotational rotation of saidrotor in closing a door, an outside pull lever having a hand portion, aflat lever cam on said pull lever, and a dat cam on said latch leverengageable by said pull lever Hat cam to disengage said latch dog fromsaid rotor projections to release said rotor for door openingdirectional rotation to permit opening of a door; and inside handle, ashaft pivotally supporting said handle for rotational movementtherewith, a cam carrier Xed on said shaft for rotational movementtherewith, and a cam lobe on said carrier adapted to engage said latchlever to depress said latch dog out of engagement with said rotorprojections via pivoting said handle to permit said rotor turning in adoor opening direction.

2. In a device as set forth in claim l, a locking dog on said camcarrier adapted to selectively engage said rotor projections to preventrotation of said rotor in a door opening rotational direction, a tongueon said cam carrier, and a spring-pressed detent adapted to selectivelyhold said cam carrier in and out of locking-dog rotorprojectionengagement as positioned by manual pivoting of said handle.

3. In a device as set forth in claim l bifurcated ends on said camcarrier, a key cylinder, an eccentrically disposed tip on said cylinderadapted to engage said bifurcated ends to by-directionally pivot saidcam carrier to move said locking dog into and out of engagement withsaid rotor projections, a tongue on said cam carrier, and aspring-pressed detent adapted to hold said cam carrier in locked orunlocked relationship.

4. A rotary-bolt lock comprising a rotary-bolt, a rotor connected tosaid bolt for rotation therewith, projections on said rotor, aspring-pressed latch lever, a latch dog on said lever adapted to engagesaid projections to prevent 4 door opening directional rotation of saidrotor to latch a door and to permit door closing directional rotation ofsaid.

handle, a shaft pivotally supporting said handle for ro- 'rationalmovement therewith, a carrier fixed on said shaft for rotationalmovement therewith, and a lobe on said carrier adapted to engage saidlatch lever to depress said latch dog out of engagement with said rotorprojections to permit said rotor turning in a door opening direction; alocking dog on said carrier adapted to selectively engage said rotorprojections to prevent rotation of said rotor in a door openingrotational direction, a tongue on said carrier, and a spring-presseddetent adapted to selectively hold said carrier in and out oflocking-dog rotor-projec tion engagement as set by manual pivoting ofsaid handle; bifurcated ends on said carrier, a key cylinder, aneccentrically disposed tip on said cylinder adapted to engage saidbifurcated ends to pivot said carrier to move said locking dog into andout of engagement with said rotor projections, a tongue on said carrier,and a springpressed detent adapted to engage said tongue to hold saidcarrier in locked or unlocked relationship relative to said rotor.

5. In a device as set forth in claim 4, said key cylinder being normallypositioned withy said tip in a neutral position relative to saidbifurcated ends to eliminate interference with said inside handleoperation.

6. In a device as set forth in claim 5, said cylinder beingby-directionally operable by a key to selectively bydirectionally pivotsaid carrier to move said locking dog into and out of engagement withsaid rotor.

References Cited in the fue of this patent UNITED STATES PATENTS2,058,163 Malone Oct. 20, 1936 2,270,559 Rolph et al. Jan. 20, 19422,373,237 Endter Apr. 10, 1945 2,476,332 Tierney et al July 19, 19492,552,815 Roethel May 15, 1951 2,604,345 Roethel July 22, 1952 2,673,757Marple Mar. 30, 1954

